Singh, B. (2001). Managerial economics. Excel.
Chicago-čujuhus (17. p.)Singh, Bharti. Managerial Economics. New delhi: Excel, 2001.
MLA-čujuhus (9. p.)Singh, Bharti. Managerial Economics. Excel, 2001.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.